RGB 'Mixer' with potentiometers

ardExp-rgbMixer.ino

/*
 * RGB Mixer code by Jonathan Prozzi. 
 * This includes Simon Monk's RGB LED code from the Adafruit lesson.
 * 
 * There are several variables that need to be initialized.
 * Remember, if you change the pins on the Arduino you 
 * also change the variables below.
 */


// These are the pins connected to each of the RGB leads.

int redPin = 11;
int greenPin = 10; 
int bluePin = 9;


// These are the input pins for the potentiometers.

int redPot = A0;
int greenPot = A1;
int bluePot = A2;

// These are the initial reading values for the potentiometers. 
int redVal = 0;
int greenVal = 0;
int blueVal = 0;

// These are the initial color values - used later in the sketch.
int redColor = 0;
int greenColor = 0;
int blueColor = 0;

#define COMMON_ANODE; // This is necessary for the common anode RGB LED.

void setup() {

// Set the RGB LED pins for output.
  pinMode(redPin, OUTPUT);
  pinMode(greenPin, OUTPUT);
  pinMode(bluePin, OUTPUT);

  Serial.begin(9600); // Setting the Serial monitor to check the values from the pots.
  
}

void loop() {

// Read the values from each potentiometer
  redVal = analogRead(redPot);
  greenVal = analogRead(greenPot);
  blueVal = analogRead(bluePot);

// Print the pot values to the Serial monitor. This is to check that the readings are coming in.
  Serial.print("Red Reading: ");
  Serial.println(redVal);
  Serial.print("Green Reading: ");
  Serial.println(greenVal);
  Serial.print("Blue Reading: ");
  Serial.println(blueVal);
  delay(1000);

// Map the potentiometer readings (0 - 1023) to RGB values (0 - 255)
  redColor = map(redVal, 0, 1023, 0, 255);
  greenColor = map(greenVal, 0, 1023, 0, 255);
  blueColor =  map(blueVal, 0, 1023, 0, 255);

// Set the RGB colors to the values from the potentiometers
  setColor(redColor, greenColor, blueColor);
  
}

void setColor(int red, int green, int blue) {

  #ifdef COMMON_ANODE
    red = 255 - red;
    green = 255 - green;
    blue = 255 - blue;
  #endif

  analogWrite(redPin, red);
  analogWrite(greenPin, green);
  analogWrite(bluePin, blue);
  
}